金属元素特性对PET缩聚反应及热性能的影响  

Study on the Influence of Characteristics of Metals on Catalyzing Polycondensation and Thermal Properties of PET

作　　者：李云鹏[1] 黄关葆[1] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029

出　　处：《北京服装学院学报（自然科学版）》2015年第4期70-75,共6页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：北京市教育委员会科技计划面上项目(km2015100120095)

摘　　要：首次将前人研究配位键键能时提出的络合物稳定常数表达式与PET的特性粘度或相对分子质量关联,用于研究金属催化剂催化PET缩聚反应速度的规律,并通过试验进行验证;并对不同金属催化剂制得的PET热性能进行了测试.In this paper the intrinsic viscosity and the relative molecular weight of PET is first correlated with the stability constantof complexes generated during the polycondensation reaction in order to study the influence of the metals（Mg,Al,Ca,Ti,Fe,Zn,Sb and Pb） contained in the polycondensation catalysts on the polycondensation reaction rate and the thermal properties of PET.Correlations of the intrinsic viscosity as well as the relative molecular weight of PET products with the stability constant of complexes show mountain shape curves with Ti giving the highest value of intrinsic viscosity and relative molecular weight.The metals in the polycondensation catalysts also show influence on the thermal properties of the PET products with Ti giving the poorest and Fe giving the highest thermal stability of PET.

关 键 词：PET 催化剂 络合物稳定常数 热性能 

分 类 号：TQ342.21[化学工程—化纤工业]